Hi,
today I noticed through chromie time that we have more dungeonsin the dungeon browser. This is related from classic to wod dungeons.
For example BC Dungeons.
Check if you're in the Lorewalking Mode. If you are - quit LW to queue dungeons that you can actually enter via queue search. Otherwise it's a weird bug that happens when you're in the LW mode. You can't enter dungeon portals and you can't enter dungeon after queue pop. Only one exception is a https://www.wowhead.com/zone=4100/ . You can enter portal to that dungeon because it's in the Cho's lorewalking quest chain, loot inside scales down to 20. Most ppl run it for https://www.wowhead.com/item=37684/forgotten-shadow-hood?bonus=8810:6710.Yep, i had some cata dungeons in list but when the queue popped, i was unable to transfer into instance.
The exceptions are Dragon Soul & Seige of Orgrimmar raids, as well as Pandaria Lorewalking scenarios (previously locked for F2P)